H
What type of heat source is commonly used in cold climates?
Nat Gas / Fuel Oil
Your low voltage circuit on a furnace control board is how many volts?
24V
Gas pressure is measured in
W.C. or Water Column
What is the purpose of flux while soldering?
Flux is a cleaning agent and helps with capillary action
Type M Copper is color coded as...
Red
What gas can we safely use to test refrigeration systems for leaks?
Nitrogen
What does GWP mean?
Global Warming Potentional
Vacuums are measured in...
Microns
What does HVACR stand for?
Heating, Ventilation, Air Conditioning and Refrigeration
Acetylene becomes instable at...
15 psi
On Fahrenheit scale, What boils at...
212
What does BTU mean?
British Thermal Unit
What is the purpose of pulling a vacuum on a refrigeration system?
Removing moisture and contaminants
What component rejects heat to the atmosphere?
Condenser
What does HFC stand for?
Hydrofluorocarbon
On a psig gauge, "0" is actually
14.7 psia
Resistance is measured in...
Ohms
20 Celsius is equal to...
68F
The purpose of regulating refrigerant disposal and use is to...
prevent chlorine from destroying the Ozone.
Incomplete combustion occurs when there is a lack of...
Oxygen
The heart of the refrigeration system
Compressor
When soldering, the pipe is heated to
500-800 degrees
Natural Gas has a BTU content of how many BTUs?
1050 BTUS
What does EMF stand for when talking about Electricity?
Electromotive force
Red thermostat wire represents what function?
Power